Wake-Up Time

Wake-up time from sleep modes with various system clock sources.

Table 1. Start-Up and Wake-Up Time
Symbol Description Clock Source PDIV Division fCLK_CPU VDD Min. Typ. Max. Unit
tstartup Start-up time from the release of any Reset source. Execution of first instruction. Any Any Any Any - 200 - µs
twakeup(1) Wake-up from Idle OSC20M FREQSEL = 0x2 1 20 MHz 5V - 1 -
2 10 MHz 3V - 2 -
4 5 MHz 2V - 4 -
OSC20M FREQSEL = 0x1 1 16 MHz 5V - 1.2 -
2 8 MHz 3V - 2.4 -
OSCULP32K 1 32.768 kHz     700  
Wake-up time from Standby or Power-down when clock source is stopped OSC20M FREQSEL = 0x2 1 20 MHz 5V - 12 -
2 10 MHz 3V - 13 -
4 5 MHz 2V - 15 -
OSC20M FREQSEL = 0x1 1 16 MHz 5V - 16 -
2 8 MHz 3V - 15 -
OSCULP32K 1 32.768 kHz   - 750 -
Note:
  1. 1.The wake-up time is the time from the wake-up request is given until the peripheral clock is available on the pin. All peripherals and modules start execution from the first clock cycle, expect the CPU that is halted for four clock cycles before program execution starts.
Figure 1. Wake-Up Time Definition
Parent topic: Electrical Characteristics